Description
Outlet pipe to injector 2.0 HDI RHR RHK SIEMENS system
Used, fully sealed
Part description
This injection outlet pipe (RAIL system pipe) is intended for 2.0 HDI RHR/RHK engines with the SIEMENS system in Citroën and Peugeot cars. It is an original used part from the Stellantis group, which according to the description is fully sealing – suitable for replacing a damaged or leaking pipe between the high-pressure distribution and the injector.
The part is often searched by the number 1570J3, which facilitates correct identification when ordering and in stock.
Technical information
- Manufacturer: Stellantis (Citroën / Peugeot)
- Model: Citroën C4; Citroën C4 PICASSO; Citroën C5; Citroën C8; PEUGEOT 3008 I; Peugeot 307; Peugeot 308; PEUGEOT 5008 I; Peugeot 807
- Other numbers: not specified
Product codes
- Product codes: 1570J3
Installation recommendations
Generally/typically for high pressure lines to injector (HDI/CR): exact steps may vary depending on specific engine design and engine compartment layout.
1) Before assembly
- Compare the new and original piece: tube shape, length, bends, ends and seating surfaces.
- Check that the threads are not stripped and the taper/seat surfaces are not pressed.
- Verify that the 1570J3 part number is legible and matches (if marked on the part) and that it is a SIEMENS system as specified.
- Do not replace the tube with a piece that is visibly deformed or has had a forcibly bent line.
2) Necessary tools and materials
- Suitable screw wrenches (ideally for union nuts), ratchet/extensions according to access
- Cleaning agents for degreasing and clean cloths (hair-free)
- Plugs/caps to temporarily cover open fuel holes (for cleanliness)
- Safety glasses and gloves
3) Step-by-step assembly procedure
- Turn off the ignition, immobilize the vehicle and allow the engine to cool down.
- Keep the area around the workplace as clean as possible – cleanliness is key with a high-pressure fuel system.
- Dismantle the parts that prevent access to the pipes (covers, etc.) according to the specific car.
- Before disconnecting the pipe, clean the area around the fitting to prevent dirt from entering the system.
- Carefully loosen the fittings on the injector side and manifold/rail side (procedure according to access), then remove the pipe.
- Immediately cover the open holes (plugs/clean cap) temporarily to prevent dust from entering.
- Place the new pipe in the original route so that it is not under tension and does not rest on sharp edges anywhere.
- First screw on the union nuts by hand (to avoid cross-threading).
- After manual seating, tighten the fitting appropriately with a tool; make sure that it fits correctly without “prying” the tube.
- Check that the pipe does not collide anywhere with the surrounding parts and is routed in the same way as the original.
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4) Post-assembly checks and test drive/function verification
- After the first start, let the engine run at idle speed and visually check for leaks at the screw connections.
- If there is a fuel leak or smell, stop the engine immediately and check the fit/tightness and cleanliness of the contact surfaces.
- After a short test drive, check again for moisture at the joints.
5) The most common assembly mistakes + how to avoid them
- Contamination of open openings of the system → work cleanly, use plugs and clean cloths.
- Cross threading on the union nut → always start by hand, without violence.
- Strain or mis-route pipe → the pipe must not be “stretched”, it must sit naturally in the original line.
- Deformation of the pipe during assembly → do not bend the pipe; if not, verify correct type and routing.
Reasons why the part is damaged
- Mechanical damage during the previous repair (bent pipe, torn screwing, thread crossing).
- Leakage on the contact surfaces due to dirt, grooves or poor seating.
- Vibration and stress caused by incorrect pipe routing or lack of fixing.
- Corrosion and material aging in the demanding temperature environment of the engine.
